MV Agusta 750 Sport America

MV Agusta
MV Agusta 750 Sport America
MV Agusta 750 Sport America
Manufacturer	MV Agusta
Production period	1975 to 1977
class	motorcycle
design type	Superbike
Motor data
Four-stroke engine , air-cooled four-cylinder in-line engine, DOHC , camshaft drive via spur gears, two valves per cylinder, oil sump lubrication, four Dell'Orto slide carburetors with a diameter of 26 mm, coil ignition
Displacement  (cm³)	789.3
Power  (kW / PS )	55 (75) at 8,500 min -1
Torque  ( N m )	68.7
Top speed (  km / h)	210
transmission	5 speed transmission
drive	propeller shaft
Brakes	front: double disc brake 280 mm / rear: 200 mm drum brake; from model 1976 with disc brake 280 mm
Wheelbase  (mm)	1,390
Empty weight  (kg)	240
Previous model	MV Agusta 750 S.
successor	none

The MV Agusta 750 Sport America also MV Agusta 750 S America, in Germany also MV Agusta 800 S America, was a motorcycle of the company MV Agusta that was built from 1975 to 1977.

development

In 1974 the MV Agusta company got into financial difficulties and under state administration. In 1975, the US-American Chris Garville and Jim Cothermann initiated the new edition of the MV Agusta 750 S . The appearance should be based more on the racing machines and thus increase sales in the USA in particular. The two entrepreneurs' designs were implemented in the Gallarate plant within 50 days .

Technical specifications

The core of the engine was the so-called banquet, a control and bearing housing; on it were the crank drive, cylinder, bored out by 2 mm compared to the previous model, and the cylinder head was mounted. The shoulder accommodated the crankshaft, which was composed of nine parts, in six bearing blocks, as did the spur gears in the control tower for driving the two camshafts. After loosening twelve nuts, the units mounted on the shoulder could be lifted out. Individual light metal cylinders, made from a block at the 1100 Grand Prix, with cast liners formed the career path for the Borgo pistons. The two overhead valves of each cylinder were operated via bucket tappets from two overhead gear-driven camshafts and. The nine-part crankshaft with roller bearings was centered in six bearing blocks. Particularly noticeable were the fine ribbing of the cooling fins and the oversized cylinder head due to the double camshaft drive. The transversely installed cassette gear was driven by the motor through a straight-toothed crank arm. It was connected to the cardan shaft to the rear wheel via a spiral bevel gear drive. Like all four-cylinder engines, the engine was assembled by hand by a mechanic.

The stanchion diameter of the Cerani telescopic fork has been increased from 35 to 38 mm, double disc brakes have been used on the telescopic fork on all models and the usual left-hand gear shift has been switched over. The red paintwork, the suede-covered seat and the round instruments from Smiths resulted in a sporty, elegant motorcycle.

Model variants

• MV Agusta 800 SS Super America (1976 to 1978): Enhanced version (60.4 kW / 82 hp at 9000 min ^-1 ) of the base engine with 789 cm³ for the US market, optionally with a 4-in-1 Magni exhaust system and magnesium wheels.
• MV Agusta 800 SS Super Daytona America (1976-78): In addition to a further increase in performance through a Magni kit, full fairing was also offered.
• MV Agusta 850 SS Monza or MV Agusta 850 SS Boxer (1977-78): It was a reamed (837 cc, bore '69) and Magni Motorkit uprated (66 kW / 90 hp at 9000 min ^-1 ) Version with full cladding that was not available in Germany. A total of 27 copies of this motorcycle were made.

Special models by Hansen & Schneider

The importer for Germany, the Hansen company in Baden-Baden , arranged for the production of special models in 1976 with the approval of the factory. These were “luxury sports machines” that gave the impression that “motorcycles were created here more as a kind of hobby and less for commercial reasons”. The engine capacity was expanded beyond the 837 cm³ offered ex works by further drilling out the engine. At the same time, the crankshaft was changed, Mahle pistons were installed and a sharper camshaft was used. The standard chassis (steering head angle 63 degrees, caster 110 mm) with Ceriani fork at the front (125 mm travel) and Sebac gas struts at the rear (70 mm travel) was retained. Only the 1000 Agostini got the Magni frame and was therefore almost 20 kg lighter than a comparable production model. The new model designations for motorcycles, which were officially only offered in Germany, but were available worldwide through the Hansen company, were:

• 900 S Arturo Magni Cento Valli
• 1000 S Corona
• 1100 Grand Prix
• 1000 agostini

	800 SS Super America	800 SS Super Daytona America	850 SS Monza	900 S Arturo Magni Cento Valli	1000 S Corona	1100 Grand Prix	1000 agostini
Construction period	1976-1988	1976-1988	1977-1988	1977-1988	1978-1982	1978-1982	1979-1980
Displacement	789 cc	789 cc	837 cc	892 cc	954 cc	1066 cc	954 cc
Bore / stroke	67 × 56 mm	67 × 56 mm	69 × 56 mm	70 × 58 mm	70 × 62 mm	74 × 62 mm	70 × 62 mm
Performance / at	60 kW / 82 PS 9,000 min -1	66 kW / 90 PS 10,000 min -1	66 kW / 90 PS 9,000 min -1	77 kW / 105 PS 10,000 min -1	78 kW / 106 PS 10,000 min -1	88 kW / 119 PS 10,200 min -1	73 kW / 99 PS 9,500 min -1
Secondary drive	Cardan	Cardan	Cardan	Cardan	Cardan	Chain	Chain
wheelbase	1420 mm	1420 mm	1420 mm	1420 mm	1390 mm	1450 mm	1450 mm
Top speed in km / h	210			235	221	237	221
Built copies			27	10	12	6th	4th

Special models Magni

Arturo Magni, former racing director of MV Agusta, independently developed motorcycles from the existing MV engines. The Magni-Kit consisted of a 11 kg light frame, electronic ignition and 30 or 32 PHF carburettors. The models Magni 832 (series engine of the MV Agusta 850 SS Monza) and Magni 861 (861 cm³ displacement, 70 mm bore) were offered from 1978.

End of production

With the exit of the company MV Agusta from racing in 1976, activities in the series sector were also scaled back. Work on prototypes was carried out until 1977, but due to the company's financial situation - MV worked with practically no profit - not implemented. The production of the model MV Agusta 750 S America was maintained until 1977, model variants until 1978. The last of the 540 copies were officially sold in 1980. A total of 1276 in-line four-cylinder units were manufactured using elaborate racing engine technology from 1966 to 1980.

• 

  MV Agusta 750
  Sport America
  model year 1975

• 

  MV Agusta 750
  Sport America
  with full fairing
  model year 1976

• 

  800 SS Super America
  with half fairing,
  model year 1976–78

literature

• Mario Colombo / Roberto Patrignani: MV Agusta . Motorbuch Verlag. Stuttgart 2000, ISBN 3-613-01416-5 .

Web links

• mvagusta.it factory museum

Individual evidence

1. ↑ MV Agusta factory museum  ( page no longer available , search in web archives )  Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice. (PDF file; 894 kB) 750 America “221” (accessed September 2, 2011)  
2. ↑ MOTORRAD Classic 5/2003, p. 14
3. ↑ technical data according to Colombo, p. 194
4. ↑ MV Agusta factory museum  ( page no longer available , search in web archives )  Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice. (PDF file; 894 kB) 750 America “221” (accessed September 2, 2011)  
5. ^ Ulrich Schwab: Motorcycles 1970/1987 in Germany. ISBN 3-613-01172-7 , p. 63
6. ↑ MOTORRAD Classic 5/2003, p. 14
7. ↑ MOTORRAD 14/1979 ( Memento of the original from April 20, 2009 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. 
8. ^ Colombo, p. 87
9. ↑ Colombo, p. 36
10. ↑ MOTORRAD Classic 5/2003, p. 17
11. ↑ thebikemuseum.com MOTORRAD 14/1977 (accessed on September 1, 2011)
12. ↑ thebikemuseum.com (accessed September 1, 2011)
13. ↑ MV Agusta Club.de (accessed on September 1, 2011)
14. ↑ Erwin Tragatsch : Famous Motorcycles. ISBN 3-613-02038-6 , p. 123
15. ↑ MV Agusta Club.de (accessed on September 1, 2011)
16. ^ Ulrich Schwab: Motorcycles 1970/1987 in Germany. ISBN 3-613-01172-7 , p. 58
17. ↑ MV Agusta Club.de (accessed on September 1, 2011)
18. ↑ MV Agusta Club.de (accessed on September 1, 2011)
19. ↑ Colombo, pp. 39/41
20. ↑ MOTORRAD Classic 5/2003, p. 21